198 MINNESOTA BOTANICAL STUDIES. 



37. Parmelia conspersa (Ehrh.) Ach. 



On rocks, abundant. Warroad, July 4, 1901, no. 368. Emo, 

 July 22, 1901, no. 814. Koochiching, July 31, 1901, no. 1041. 

 Rainy Lake City, August 1, 1901, no. 1062. Kettle falls, 

 August 9, 1901, no. 1330. Harding, August 19, 1901, no. 

 1601. Tower, August 24, 1901, no. 1743. 



38. Physcia speciosa (Wulf., Ach.) Nyl. 



On trees and rocks, frequent. Beaudette, June 19, 1901, no. 

 45, June 21, 1901, no. 93, and June 22, 1901, no. 117. War- 

 road, June 26, 190 1, no. 180 and July 1, 1901, no. 300. Oak 

 island, July 8, 1901, no. 398 and July 9, 1901, no. 441. Emo, 

 July 17, 1901, no. 644. Rainy Lake City, August 1, 1901, no. 

 793. Koochiching, July 29, 1901, nos. 969 and 973 and July 

 31, 1901, no. 1058. Kettle falls, August 13, 1901, no. 1437. 

 Harding, August 16, 1901, no. 1505 and August 17, 1901, no. 

 1558. Tower, August 23, 1901, no. 1691 and August 26, 1901, 

 no. 1814. 



39. Physcia aquila (Ach.) Nyl. 



On trees, rare. Harding, August 20, 1901, no. 1620. 

 Tower, August 26, 1901, no. 1771 and 1784. 



40. Physcia aquila (Ach.) Nyl. var. detonsa Tuck. 



On cedars, rare. Emo, July 23, 1901, no. 837. Koochi- 

 ching, July 31, 1901, no. 1024. 



41. Physcia pulverulenta (Schreb.) Nyl. 



On trees, frequent. Beaudette, June 18, 1901, no. 13 and 

 June 24, 1901, no. 140. Warroad, June 25, 1901, no. 163. 

 Oak island, July 8, 1901, no. 407 and July 10, 1901, no. 486. 

 Emo, July 17, 1901, nos. 639 and 664, July 18, 1901, no. 706 

 and July 22, 1901, no. 813. Koochiching, July 29, 1901, no. 

 982. Rainy Lake City, August 2, 1901, no. 1103 and August 

 5, 1901, no. 1210. Kettle falls, August 15, 1901, no. 1494. 

 Harding, August 20, 1901, no. 1652. Tower, August 23, 

 1901, no. 1686. 



42. Physcia pulverulenta (Schreb.) Nyl. var. leucoleiptes 

 Tuck. 



On trees and rocks, rare. Emo, July 23, 1901, no. 830. 

 Rainy Lake City, August 5, 1901, no. 1196. 



43. Physcia stellaris (L.) Tuck. 



On trees and rocks, common. Beaudette, June 18, 1901, no. 

 7. Warroad, June 25, 1901, no. 148 and July 4, 1901, no. 



